Bio-Sensing Based Monitoring Of Health

3. The method of claim 2, wherein the waist size is a waist circumference or a waist length, and wherein the hip size is a hip circumference or a hip length.

8. The method of claim 7, wherein the client device comprises a wearable device.

9. The method of claim 5, wherein the first or second activity metrics are determined based on output from an accelerometer in a client device.

11. The method of claim 5, wherein the period of stress resilience comprises the time period from which the user's heart rate starts decreasing during a period of stress until the heart rate of the user is within a resting heart rate.

14. The method of claim 13, wherein the feedback comprises one or more suggestions to immediately reduce a stress level of the user.

15. The method of claim 1, wherein providing the feedback to the user based on the one or more stress-related parameters comprises providing, by the one or more computing devices, feedback after the start of an episode of chronic stress.

16. The method of claim 1, further comprising recording, by the one or more computing devices, the waist-hip measurement in association with the one or more stress-related parameters.

17. The method of claim 16, wherein the waist-hip measurement comprises at least a waist size or a waist-to-hip ratio, and wherein the one or more stress-related parameters comprises at least a stress resilience or an LHPA axis activation.

19. The method of claim 1, wherein the LHPA axis activation threshold time period has an initial value of 25 minutes from the start of a detected stress episode.

25. The method of claim 1, wherein the one or more stress-related parameters or the correlations between the waist-hip measurement and the one or more stress-related parameters are determined using a machine learning algorithm.

28. The media of claim 27, wherein the waist size is a waist circumference or a waist length, and wherein the hip size is a hip circumference or a hip length.

33. The media of claim 32, wherein the client device comprises a wearable device.

34. The media of claim 30, wherein the first or second activity metrics are determined based on output from an accelerometer in a client device.

38. The system of claim 37, wherein the waist size is a waist circumference or a waist length, and wherein the hip size is a hip circumference or a hip length.

43. The system of claim 42, wherein the client device comprises a wearable device.

44. The system of claim 40, wherein the first or second activity metrics are determined based on output from an accelerometer in a client device.